SNBC BTP-M300 User manual

SERVICE MANUAL
Receipt Printer
BTP-M300
Shandong New Beiyang Information Technology Co., Ltd.

BTP-M300 Service Manual
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Declaration
Information in this document is subject to change without notice. SHANDONG NEW BEIYANG
INFORMATION TECHNOLOGY CO., LTD. (hereinafter referred to as “SNBC”) reserves the right to
improve product as new technology, components, software, and firmware become available. If users need
further data about this products or have any doubt about safety issues that might arise from using it, please
feel free to contact your dealer.
No part of this document may be reproduced or transmitted in any form or by any means, electronic or
mechanical, for any purpose without the express written permission of SNBC.
Copyright
Copyright © 2013 by SNBC.
Printed in China.
Version 1.0.
Trademark
SNBC registered trademarks:
Warning and Caution
Warning: Items shall be strictly followed to avoid damages to body and equipment.
Caution: Items with important information and prompts for operating the printer.
SNBC has passed following certifications:
ISO9001 Quality Control System Certification
ISO14001 Environmental Management System Certification
OHSAS18001 Occupational Health and Safety Management System Certification
IECQ QC080000 Hazardous Substance Process Management System Certification
Contact us
Address: No.169 huoju road, high-tech zone, Weihai, China
Hot line: 400-618-1368 800-860-1368
Fax: [phone]
PC: 264209
Website: www.newbeiyang.com.cn

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Maintenance cautions
1) Follow the steps in this manual during maintenance;
2) Make sure that the printer and the computer are turned off before plugging/unplugging the
communication cable, changing print head or doing maintenance to the printer;
3) Be sure to protect it against electrostatic damage when maintaining print head and other electronic
components;
4) Time between turning on and turning off the printer should be no less than 20 seconds;
5) Do not print without paper and ribbon; otherwise you may damage the print bar and print head;
6) In order to ensure the stable work of each components and printer’s lifetime, you need to conduct a
regular maintenance monthly at least. The regular maintenance includes printer status check, printer
dust cleaning and part lubrication. If the printer has a larger workload, the maintenance cycle can be
appropriately shortened.

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Contents
1 Features and Specifications ......................................................................................................................1
1.1 Features .............................................................................................................................................1
1.2 Technical Specifications .....................................................................................................................1
2 Printer Overview........................................................................................................................................2
3 Main Control Board Description.................................................................................................................4
3.1 USB interface .....................................................................................................................................4
3.1.1 Parameter ...................................................................................................................................4
3.1.2 Interface signal............................................................................................................................4
3.1.3 USB interface connection............................................................................................................4
3.2 Serial interface ...................................................................................................................................4
3.2.1 Parameter ...................................................................................................................................4
3.2.2 Interface connection and signal function .....................................................................................5
3.2.3 Serial connection.........................................................................................................................5
3.3 Parallel interface.................................................................................................................................5
3.3.1 Parameter ...................................................................................................................................5
3.3.2 Time Sequence of the Parallel Interface Module.........................................................................5
3.3.3 Interface signal............................................................................................................................6
3.3.4 Parameter ...................................................................................................................................7
3.3.5 Effect of printer’s status on parallel interface...............................................................................7
3.4 Ethernet interface ...............................................................................................................................7
3.4.1 Interface character ......................................................................................................................7
3.4.2 Protocol supported ......................................................................................................................7
3.4.3 Electrical character......................................................................................................................8
3.4.4 Frame type ..................................................................................................................................8
3.4.5 Interface signal............................................................................................................................8
4 Disassembly and Assembly.......................................................................................................................9
4.1 Maintenance Tools .............................................................................................................................9
4.2 Disassemble the printer....................................................................................................................10
4.2.1 Disassemble the printer cover...................................................................................................10
4.2.2 Disassemble the main control board cover ...............................................................................13
4.2.3 Disassemble the stationary blade cutter module.......................................................................14
4.2.4 Disassemble the non-retraction platen roller module ................................................................15
4.2.5 Disassemble the paper cabinet module ....................................................................................17
4.2.6 Disassemble the print module ...................................................................................................20

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4.3 Assemble the printer.........................................................................................................................24
5 Printer maintenance ................................................................................................................................25
5.1 Main part replacing...........................................................................................................................25
5.1.1 Print head replacing ..................................................................................................................25
5.1.2 Cutter replacing.........................................................................................................................26
5.1.3 Main control board replacing .....................................................................................................28
5.1.4 Paper feed motor replacing .......................................................................................................29
5.1.5 CR motor replacing ...................................................................................................................29
5.1.6 Upper mark sensor replacing ....................................................................................................30
5.1.7 Lower mark sensor replacing ....................................................................................................31
5.1.8 HP sensor replacing..................................................................................................................32
5.1.9 Paper sensor replacing .............................................................................................................33
5.2 Printer adjustment ............................................................................................................................34
5.2.1 Print spacing adjustment...........................................................................................................34
5.2.2 Tighten transmission belt of carriage ........................................................................................34
6 Error Types and Processing ....................................................................................................................36
7 Troubleshooting.......................................................................................................................................37
7.1 Abnormal print effect ........................................................................................................................37
7.2 Abnormal paper detection ................................................................................................................37
7.3 Printing with noise ............................................................................................................................37
7.4 Abnormal ribbon action.....................................................................................................................38
7.5 Abnormal cutter action......................................................................................................................38
7.6 Printer doesn’t work..........................................................................................................................39
7.7 Problem during the printing process.................................................................................................39
Appendix ....................................................................................................................................................40
Appendix 1 Hexadecimal Dump Mode ...................................................................................................40
Appendix 2 Command list ......................................................................................................................41
Appendix 3 EEPROM setting table ........................................................................................................43
Appendix 4 Spare part list ......................................................................................................................44
Appendix 5 Exploded drawing of the printer...........................................................................................47
Appendix 6 Part list ................................................................................................................................50
Appendix 7 Outline drawing ...................................................................................................................54
Appendix 8 Main board layout................................................................................................................55
Appendix 9 Lubrication...........................................................................................................................56

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1 Features and Specifications
1.1 Features
The BTP-M300 is a 9-pin serial impact dot matrix receipt printer offering high quality, high speed, and
stable performance. It is widely used in real-time printing on-site, such as POS system, kitchen and finance
applications.
The BTP-M300 can be connected with other devices via USB, parallel, serial and Ethernet interface, and it
provides drivers and applications under 2000/2003/XP/Vista.
1.2 Technical Specifications
Item Specification
Print mode 9-pin serial impact dot matrix
Print speed Max. 4.7LPS (400 dots/line)
Print width Max. 400(half dots)/200(full dots)
Paper
Paper type Continuous paper or marked paper
Single layer Paper width: 80±0.5mm,76±0.5mm,69.5±0.5mm,57.5±0.5mm;
Paper thickness: 0.06—0.085mm
Multi-layer paper
(1 original+1 copies)
Paper width: 80±0.5mm,76±0.5mm,69.5±0.5mm,57.5±0.5mm;
Paper thickness: 0.05—0.08mm, total thickness≤0.14 mm
Character
Character type Font A: 9×9 Font B: 7×9 Chinese: 16×16
Characters/line (Default)
76mm 69.5mm 57.5mm
Font A 33 CPL 30 CPL 25 CPL
Font B 40 CPL 36 CPL 30 CPL
Chinese 22 CPL 20 CPL 16 CPL
Character size (Default) Font A: 1.6×3.1mm Font B: 1.2×3.1mm Chinese: 2.7×2.9mm
Characters/inch (Default) Font A: 13.3CPI Font B: 16CPI Chinese: 8.9CPI
Data
buffer
Receiving buffer 64KB/8KB/40Byte
NV image data 128KB
NV user data 8KB
Ribbon specification ERC-38 ribbon cartridge
Ribbon lifetime
ERC-38(P) 4,000,000 characters
ERC-38(B) 3,000,000 characters
ERC-38(B/R) Black: 1,500,000 characters
Red: 750,000 characters
Communication interface USB / IEEE1284/RS-232/Ethernet /(optional)
Cash drawer connector Can control 1～2 cash drawers
Power supply AC100-240V~1.0A Max 50-60Hz
Reliability
Printing Mechanism 10,000,000 lines
Print head 150,000,000 characters
Cutter 800,000 cuts(paper thickness:0.080mm, standard testing condition)
Operating temperature and humidity 5～45℃,20～90%RH (40 )℃
Storage temperature and humidity -40～60℃,20%～93%RH (40 )℃
Dimensions 160(W)×245(D)×154(H)
Weight 3.0kg

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2 Printer Overview
The BTP-M300 printer consists of the following parts:
Pinter mechanism part, NDLF main control board, expanded interface board.
Main control board unit block diagram is shown as below:
FLASH
Communication interface
module
Communication
interface module
Main Control Board Unit Block Diagram

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Position of all the sockets in the main control board

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3 Main Control Board Description
BTP-M300 can be connected to another device with USB, serial, parallel, Ethernet or WIFI interface.
3.1 USB interface
3.1.1 Parameter
¾Data transfer: Supports USB1.1 Protocol
¾Connector: USB B type standard socket
3.1.2 Interface signal
The printer built-in USB interface supports USB1.1 protocol, of which the outlet is USB A type.
Interface signal is defined as below:
3.1.3 USB interface connection
Host Printer
VBUS..................................…VBUS
DATA- ................................…DATA-
DATA+................................... DATA+
GND .......................................GND
Caution:
The vertical USB interface can not be used when set the receiving buffer to 40Bytes.
3.2 Serial interface
3.2.1 Parameter
¾Data transmission: Asynchronous serial communicate
¾Handshaking: DTR/DSR or XON/XOFF
¾Voltage: MARK = -3 to -15V: Logic "1"/ OFF
SPACE = +3 to +15V: Logic "0"/ ON
¾Baud rate: 1200, 2400, 4800, 9600, 19200, 38400, 57600 bps
[bps: bits per second]
¾Data bit: 7 bit or 8 bit
¾Parity bits: No
¾Stop bit: 1 bit or 2 bit
¾Connector: D-SUB 25PIN hole socket
Caution:
Handshaking, baud rate, data bit and stop bit can be set by EEPROM and feed button.
Pin Signal name Function
1 VBUS +5V
2 DATA- Data-
3 DATA+ Data+
4 GND Ground

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3.2.2 Interface connection and signal function
Pin Signal Name Signal Direction Function
1 FG — Frame ground
2 TXD OUTPUT Data output
3 RXD INPUT Data input
4 RTS OUTPUT Request to send
6 DSR INPUT Host ready
7 SG — Signal ready
20 DTR OUTPUT Data terminal ready
3.2.3 Serial connection
Host Printer
TXD---------------RXD
RXD---------------TXD
DSR---------------DTR
CTS---------------RTS
RTS---------------CTS
DTR---------------DSR
FG -----------------FG
SG ----------------SG
3.3 Parallel interface
Parallel interface works under IEEE1284 compatible mode and byte mode.
3.3.1 Parameter
¾Data transmission: 8 bit parallel
¾Synchronized mode: Externally supplied nStrobe signals
¾Handshaking mode: Busy Signal
¾Handshaking pressure: TTL compatible
¾Connector: IEEE 1284-B(CENTRONICS) socket
3.3.2 Time Sequence of the Parallel Interface Module
Time Sequence of Parallel Interface (compatible mode)

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Signal Min. value (ns) Max. value (ns)
tSetup 750 -
tReady 0 -
tStb 750 -
tBusy 0 500
tHold 750 -
Time Request of Parallel Interface
3.3.3 Interface signal
Pin Signal source Signal definition Pin Signal source Signal definition
1 H nStrobe 19 Signal Ground
2 H Data 0 (Least Significant Bit) 20 Signal Ground
3 H Data 1 21 Signal Ground
4 H Data 2 22 Signal Ground
5 H Data 3 23 Signal Ground
6 H Data 4 24 Signal Ground
7 H Data 5 25 Signal Ground
8 H Data 6 26 Signal Ground
9 H Data 7 (Most Significant Bit) 27 Signal Ground
10 P Ack 28 Signal Ground
11 P Busy 29 Signal Ground
12 P PError 30 Signal Ground
13 P Select 31 H nInit
14 H nAutoLF 32 P nFault
15 Not defined 33 Signal Ground
16 Logic Gnd 34 Not defined
17 Chassis Gnd 35 Not defined
18 P Peripheral Logic High 36 H nSelectIn
Parallel interface signal definition
Caution:
H stands for host end, P stands for printer end.
Parallel interface signal adopting TTL level. Please make sure that both ascending and descending
time of the host end are less than 0.5μs when using the printer to print.
During data transmitting, the host end should not neglect the Busy signal, otherwise the printing data
will be lost.
The parallel interface signal cable should be as short as possible.

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3.3.4 Parameter
3.3.5 Effect of printer’s status on parallel interface
Status /nFault PE
Normal status High Low
Paper end Low High
Rear cover open Low Low
Cutter error Low Low
Input voltage is abnormal Low Low
Print head is overheated Low Low
HP error Low Low
Caution:
When the above error occurs, user can inquire the printer’s status from the pin of parallel interface.
3.4 Ethernet interface
3.4.1 Interface character
¾Supports 10BASE-T communication
¾Ethernet II frame type compatible
¾LED indicates the net connection status and data transmission status
¾Supports 9100 port printing
¾Supports status back
¾Supports parameter configuration
¾Supports firmware update online
¾Supports printer status inquiry and interface module maintenance based in HTTP mode
3.4.2 Protocol supported
¾IP
¾ARP
¾ICMP
¾TCP

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¾UDP
¾DHCP
¾TFTP
¾HTTP
3.4.3 Electrical character
Output signal:
¾The valid differential mode voltage is more than 450mV, and the peak voltage is no more than 13V;
¾The common mode peak AC voltage is no more than 2.5V.
Input signal:
¾If the differential mode voltage is more than 160mV, then it is valid signal.
3.4.4 Frame type
Compatible with the frame type of Ethernet II format.
3.4.5 Interface signal
The interface use 10BASE-T standard which comply to IEEE802.3.
Pin Signal Name Description
1 TX+ Data sending +
2 TX- Data sending-
3 RX+ Data receiving+
4 NC Reserved
5 NC Reserved
6 RX- Data receiving-
7 NC Reserved
8 NC Reserved

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4 Disassembly and Assembly
Caution:
Do not disassemble, assemble or adjust the printer if it works properly. Do not unscrew any
screws unless necessary.
When disassembling and assembling, avoid damaging all wires and cables.
When handling the print head or electronic component, make sure to take some measures to
protect it from electrostatic charge.
During maintenance, be careful not to leave parts or screws loose inside the printer.
During maintenance, be careful not to damage the print head surface and the print bar.
4.1 Maintenance Tools
Maintenance Tools:
¾Cross screwdriver
¾Sharp-nose pliers
¾Wire cutter
Assistant materials:
¾Lubricant grease
¾Alcohol
¾Absorbent cotton

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4.2 Disassemble the printer
4.2.1 Disassemble the printer cover
Picture Instructions
Top view of printer.
1) Remove the two screws (ST2.9x8) shown in
the figure with the cross screwdriver;
2) Take off the vertical pluggable interface board
shown in the figure.
1) Push out the power cover plate in the arrow
direction;
2) Take off the built-in power supply from its
location position.

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Remove the six screws (M3x4) shown in the figure
with cross screwdriver, and take off the bottom
cover.
1) Remove the four screws (ST2.9x6) shown in
the figure with cross screwdriver;
2) Take off the top cover.
Remove the four screws (ST2.9x6) shown in the
figure with cross screwdriver, and take off the front
cover.

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1) Remove the two screws (M3x7) shown in the
figure with cross screwdriver;
2) Disconnect the connecting cable between
button and control board;
3) Push out the cover locking unit at the back of
middle cover with appropriate force, and take
off the middle cover;
4) Take off the baffle of middle cover with
appropriate force upward.
Notes:
Please do not pull the connection wire to avoid
damage to the wire when plug and unplug the
connection wire
Remove the two screws (ST2.9x6) shown in the
figure with cross screwdriver, and take off the
button board.

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4.2.2 Disassemble the main control board cover
Picture Instructions
Remove the two screws (M2.5x5) shown in the
figure with cross screwdriver, and take off the
optional communication interface module.
Notes:
Please use moderate force to plug/unplug the
communication interface in horizontal
direction to avoid damaging the pins.
1) Unplug all the wires in the main control board
with a moderate force;
2) Remove the four screws (M3x5) with the
screw driver and take off the main control
board.
Notes:
Please keep the main control board safely to
avoid scratching and short circuit;
Please do not pull the connection wire to avoid
damage to the wire when plug and unplug the
connection wire.
1) Remove the two screws (M2x8) shown in the
figure at with cross screwdriver and take off①
the micro switch;
2) Remove the two sunk screws (M3x5) shown in
the figure at with cross screw driver and②
take off the guide plate;
3) Take off the power switch in the arrow
direction shown in the figure

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Remove the three screws (M3x5) shown in the
figure with cross screwdriver and take off the
interface plate in the arrow direction shown in the
figure.
4.2.3 Disassemble the stationary blade cutter module
Picture Instructions
Take off the one "E"-ring on one end of the rotation
shaft of stationary blade cutter with sharp-nose
pliers, pull out the rotation shaft of stationary blade
along the arrow direction and disassemble the
stationary blade module
Remove the two screws (M3x7) shown in the
figure with cross screwdriver, and take off the
cutter bracket and stationary blade cutter
Notes:
Please be careful to keep the stationary blade
disassembled to avoid damage to human
body;
Please be careful to keep the stationary blade
disassembled to avoid being scratched by
hard objects.

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1) Remove the two screws (M2.5x4) shown in
the figure with cross screwdriver, and
disassemble the support plate module of
paper pressure roller and cutter support
module;
2) Disassemble the two 2mm "E"-rings shown in
the figure with sharp-nose pliers, and
disassemble the paper pressure roller.
Remove the two screws (ST2.9x6) shown in the
figure with cross screwdriver, and then
disassemble the left and right holders of stationary
blade.
4.2.4 Disassemble the non-retraction platen roller module
Picture Instructions
1) Cut off the cable tie of cutter cable with wire
cutter;
2) Take off one “E”-ring at one end and one
“E”-ring at the middle of the rear rotation shaft
with sharp-nose pliers, pull out the rear
rotation shaft along the arrow direction shown
in the figure, and then disassemble the
non-retraction platen roller module.
1) Remove the two screws (ST2.9x6) shown in
the figure with the cross screwdriver;
2) Move the cutter sliding blade along the arrow
direction (move forward horizontally, then
move upward), and then disassemble the
sliding blade module.